/* Articles — the same instrument dialect as the front door.
   Self-hosted subset fonts (scripts/build-fonts.mjs); no third parties. */

@font-face {
  font-family: "Newsreader";
  src: url("/fonts/newsreader-var.woff2") format("woff2");
  font-style: normal; font-weight: 300 600; font-display: swap;
}
@font-face {
  font-family: "Newsreader";
  src: url("/fonts/newsreader-italic-var.woff2") format("woff2");
  font-style: italic; font-weight: 300 600; font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("/fonts/plex-mono-400.woff2") format("woff2");
  font-style: normal; font-weight: 400; font-display: swap;
}
@font-face {
  font-family: "IBM Plex Mono";
  src: url("/fonts/plex-mono-600.woff2") format("woff2");
  font-style: normal; font-weight: 500 600; font-display: swap;
}
@font-face {
  font-family: "Newsreader-fallback";
  src: local("Georgia"), local("Times New Roman");
  font-style: normal;
  size-adjust: 109.6%; ascent-override: 74%; descent-override: 27%; line-gap-override: 0%;
}
@font-face {
  font-family: "Newsreader-fallback";
  src: local("Georgia Italic"), local("Georgia"), local("Times New Roman");
  font-style: italic;
  size-adjust: 102.2%; ascent-override: 74%; descent-override: 27%; line-gap-override: 0%;
}

:root {
  --paper:      #faf9f6;
  --paper-deep: #f2efe7;
  --ink:        #16171d;
  --ink-soft:   #4c4e58;
  --ink-faint:  #6e707a;
  --rule:       #e2dfd4;
  --rule-soft:  #ece9e0;
  --indigo:      #3d4db3;
  --indigo-deep: #2e3a87;
  --indigo-wash: rgba(61, 77, 179, 0.08);
  --indigo-line: rgba(61, 77, 179, 0.24);
  --ochre:       #8a5e1f;
  --ochre-wash:  rgba(168, 119, 43, 0.10);
  --verified:    #3a8f5b;

  --serif: "Newsreader", "Newsreader-fallback", Georgia, "Times New Roman", serif;
  --mono:  "IBM Plex Mono", ui-monospace, "SF Mono", "Cascadia Mono", monospace;
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
html { scroll-behavior: smooth; }
body {
  background: var(--paper); color: var(--ink);
  font-family: var(--serif); font-size: 18px; line-height: 1.7; font-weight: 400;
  -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility;
  font-optical-sizing: auto; font-kerning: normal;
  font-feature-settings: "kern" 1, "liga" 1, "calt" 1;
  hanging-punctuation: first allow-end;
  overflow-x: hidden;
}
/* the same paper light + laid grain as the front door */
body::before {
  content: ""; position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background:
    radial-gradient(150% 96% at 50% -14%, rgba(255,254,249,0.75), rgba(255,254,249,0) 52%),
    radial-gradient(118% 104% at 50% 44%, rgba(26,28,38,0) 58%, rgba(26,28,38,0.05) 100%);
}
body::after {
  content: ""; position: fixed; inset: 0; z-index: 5; pointer-events: none; opacity: 0.5;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.022'/%3E%3C/svg%3E");
}
a { color: inherit; text-decoration: none; }
::selection { background: rgba(61, 77, 179, 0.18); }
main, header.site-header, footer.foot { position: relative; z-index: 4; }

.skip { position: absolute; left: -9999px; background: var(--ink); color: var(--paper); padding: 10px 16px; z-index: 200; }
.skip:focus { left: 8px; top: 8px; }

/* ── corner mark + mono nav ── */
.site-header {
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
  padding: clamp(20px, 3.2vh, 34px) clamp(22px, 6vw, 120px) 0;
  max-width: 1280px; margin: 0 auto;
}
.mark { display: flex; align-items: center; gap: 11px; color: var(--ink); }
.mark svg { height: 30px; width: auto; display: block; }
.mark b { font-weight: 600; font-size: 15px; letter-spacing: 0.01em; }
.mark .tld { font-family: var(--mono); font-size: 12px; color: var(--ink-faint); margin-left: 2px; }
.site-nav { display: flex; gap: 22px; font-family: var(--mono); font-size: 13px; color: var(--ink-soft); }
.site-nav a { padding: 4px 0; border-bottom: 1px solid transparent; transition: color 180ms, border-color 180ms; }
.site-nav a:hover, .site-nav a[aria-current] { color: var(--indigo); border-color: var(--indigo-line); }

/* ── article shell: broadsheet column ── */
.article-shell { max-width: 760px; margin: 0 auto; padding: clamp(40px, 7vh, 84px) 22px 40px; }
.article h1 {
  font-size: clamp(2rem, 4.6vw, 3.1rem); font-weight: 400; line-height: 1.08;
  letter-spacing: -0.014em; margin: 0 0 26px; hanging-punctuation: first;
  text-wrap: balance;
}
.article h1 em { font-style: italic; color: var(--indigo); }
.article h2 {
  font-size: clamp(1.35rem, 2.4vw, 1.62rem); font-weight: 500; line-height: 1.22;
  margin: 2.4em 0 0.6em; padding-top: 1.1em; border-top: 1px solid var(--rule);
}
.article h3 { font-size: 1.12rem; font-weight: 600; margin: 1.8em 0 0.5em; }
.article p, .article ul, .article ol { font-size: 1.02rem; line-height: 1.72; color: var(--ink); }
.article li { margin-bottom: 0.4em; }
.article strong { font-weight: 600; }
.article em { font-style: italic; }
.article hr { border: 0; border-top: 1px solid var(--rule-soft); margin: 2.2em 0; }
.article a { color: var(--indigo); text-decoration: underline; text-decoration-color: var(--indigo-line); text-underline-offset: 3px; transition: text-decoration-color 180ms; overflow-wrap: anywhere; }
.article a:hover { text-decoration-color: var(--indigo); }

/* Article header: deck + byline */
.article-deck {
  font-family: var(--serif);
  font-size: clamp(1.28rem, 2.2vw, 1.5rem);
  font-weight: 400; line-height: 1.36;
  color: var(--ink-soft);
  max-width: 680px;
  margin: -8px 0 16px;
}
.article-byline {
  display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px;
  font-family: var(--mono); font-size: 12.5px;
  color: var(--ink-faint);
  margin: 0 0 26px;
  padding: 0;
  list-style: none;
}
.article-byline li { display: inline-flex; align-items: center; }
.article-byline li[aria-hidden="true"] { user-select: none; }
.article-byline time { font-variant-numeric: tabular-nums; }
.byline-sep { opacity: 0.55; }

.article-kicker {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--indigo);
  margin: 0 0 10px;
}
.article-kicker + h1 { margin-top: 0; }

.article-status {
  display: inline-block;
  font-size: 10.5px; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.07em;
  padding: 3px 8px; border-radius: 999px;
  border: 1px solid var(--rule);
  color: var(--ink-soft); background: var(--paper-deep);
}
/* legacy metadata block is no longer emitted; hide any stray instance */
.article-meta { display: none; }

/* true quotations */
.article blockquote {
  margin: 1.6em 0; padding: 0 0 0 20px; border-left: 2px solid var(--indigo-line);
  color: var(--ink-soft); font-style: italic;
}

/* figures & media */
.article img { max-width: 100%; height: auto; display: block; }
.article figure { margin: 2em 0; }
.article figure img, .article figure video { width: 100%; height: auto; display: block; border: 1px solid var(--rule); }
.article figcaption {
  font-family: var(--mono); font-size: 12.5px; line-height: 1.6; color: var(--ink-faint);
  padding: 10px 2px 0;
  border-left: 2px solid var(--indigo-line);
  margin-top: 8px;
  padding-left: 12px;
}
.article-hero { margin: 0 0 2em; }

.proof-download {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 22px;
  margin: 0 0 28px;
  padding: 19px 20px;
  background: var(--paper-deep);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--indigo);
  border-radius: 6px;
}
.proof-download .eyebrow,
.proof-download .metadata { margin: 0; font-family: var(--mono); font-size: 11px; }
.proof-download .eyebrow { color: var(--indigo-deep); letter-spacing: 0.08em; text-transform: uppercase; }
.proof-download h2 { margin: 4px 0 6px; font-size: 24px; }
.proof-download .description { margin: 0 0 8px; color: var(--ink-soft); }
.proof-download .metadata { color: var(--ink-faint); }
.article .proof-download__action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 128px;
  min-height: 44px;
  padding: 10px 16px;
  color: var(--paper);
  background: var(--indigo);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  text-decoration: none;
}
.article .proof-download__action:hover { color: var(--paper); background: var(--indigo-deep); }
.article .proof-download__action:focus-visible { outline: 3px solid var(--indigo); outline-offset: 3px; }
.proof-download__print-url { display: none; }

@media (max-width: 600px) {
  .proof-download { grid-template-columns: 1fr; gap: 16px; }
  .proof-download__action { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .proof-download__action { transition: none; }
}

/* code, tables, footnotes */
.article code { font-family: var(--mono); font-size: 0.86em; background: var(--paper-deep); padding: 0.12em 0.36em; border-radius: 3px; }
.article pre { max-width: 100%; background: var(--paper-deep); border: 1px solid var(--rule-soft); padding: 16px 18px; overflow-x: auto; }
.article pre code { background: none; padding: 0; font-size: 13px; line-height: 1.6; white-space: pre-wrap; overflow-wrap: anywhere; }
.article table { border-collapse: collapse; width: 100%; margin: 1.6em 0; font-size: 0.92rem; }
.article th { font-family: var(--mono); font-size: 12px; letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-soft); text-align: left; }
.article th, .article td { border-bottom: 1px solid var(--rule-soft); padding: 8px 14px 8px 0; vertical-align: top; }
.article .footnotes { font-size: 0.9rem; color: var(--ink-soft); margin-top: 3em; border-top: 1px solid var(--rule); padding-top: 1.2em; }
.article .footnotes p { font-size: 0.9rem; }
.article sup a { text-decoration: none; color: var(--indigo); font-family: var(--mono); font-size: 0.75em; }
.footnote-backref { margin-left: 0.35em; text-decoration: none; }
.footnote-backref:first-child { margin-left: 0; }
.footnotes-heading {
  font-family: var(--mono); font-size: 13px; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase; font-variant: small-caps;
  color: var(--ink-soft); margin: 0 0 1em;
}

/* ── index page ── */
.article-index { max-width: 1120px; margin: 0 auto; padding: clamp(48px, 8vh, 96px) 22px 40px; }
.b-label {
  font-family: var(--mono); font-size: 12.5px; letter-spacing: 0.24em;
  text-transform: uppercase; color: var(--indigo); margin: 0 0 16px;
}
.article-index h1 {
  font-size: clamp(1.7rem, 3.2vw, 2.5rem); font-weight: 400; line-height: 1.16;
  letter-spacing: -0.012em; margin: 0 0 44px; max-width: 26ch; text-wrap: balance;
}
.article-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(20px, 2.6vw, 40px); }
.article-card {
  display: block; border-top: 1px solid var(--rule); padding: 18px 6px 20px;
  transition: background 240ms var(--ease), border-color 240ms var(--ease); height: 100%;
}
.article-card:hover { background: var(--indigo-wash); border-top-color: var(--indigo-line); }
.article-card .card-thumb { width: 100%; height: auto; aspect-ratio: 16/9; object-fit: cover; display: block; border: 1px solid var(--rule); margin-bottom: 14px; }
/* the thumb breathes on hover inside its own frame — the frame never moves */
.article-card picture { display: block; overflow: hidden; margin-bottom: 14px; }
.article-card picture .card-thumb { transition: transform 600ms var(--ease); margin-bottom: 0; }
.article-card:hover picture .card-thumb { transform: scale(1.02); }
@media (prefers-reduced-motion: reduce) {
  .article-card picture .card-thumb, .article-card:hover picture .card-thumb { transition: none; transform: none; }
}
.card-status { text-transform: uppercase; letter-spacing: 0.08em; font-size: 11px; }
.card-status.is-published { color: var(--verified); font-weight: 600; }
.card-thumb-empty {
  display: flex; align-items: center; justify-content: center; gap: 6px;
  aspect-ratio: 16/9; border: 1px solid var(--rule); margin-bottom: 14px;
  background: linear-gradient(135deg, var(--paper-deep), var(--paper));
}
.card-thumb-empty i { width: 7px; height: 7px; border-radius: 50%; background: var(--indigo-line); }
.card-thumb-empty i:nth-child(2) { background: var(--indigo); transform: translateY(-6px); }
.card-thumb-empty i:nth-child(3) { background: var(--ochre); transform: translateY(4px); }
.article-card .d8 { font-family: var(--mono); font-size: 12px; color: var(--ink-faint); }
.article-card h2 { font-size: 1.24rem; font-weight: 500; line-height: 1.26; margin: 9px 0 8px; text-wrap: balance; }
.article-card p { font-size: 0.94rem; line-height: 1.56; color: var(--ink-soft); margin: 0; }

/* ── 404: even the dead end is on-brand — the manifold, still flowing ── */
.lost-ribbon {
  display: block; max-width: 760px; margin: 0 auto 34px;
  border: 1px solid var(--rule); overflow: hidden;
}
.lost-ribbon img {
  display: block; width: 100%; height: 150px; object-fit: cover;
  opacity: 0.6; mix-blend-mode: multiply;
}

/* ── colophon (same as the front door) ── */
.foot {
  display: flex; justify-content: space-between; gap: 14px 32px; flex-wrap: wrap; align-items: baseline;
  padding: 26px clamp(22px, 6vw, 120px) 36px; margin: clamp(36px, 6vh, 72px) auto 0;
  max-width: 1280px; border-top: 1px solid var(--rule);
  font-family: var(--mono); font-size: 13px; color: var(--ink-faint);
}
.foot .creed { font-family: var(--serif); font-style: italic; font-size: 15px; color: var(--ink-soft); }
.foot a { color: var(--ink-soft); text-decoration: underline; text-underline-offset: 2px; border-bottom: 1px solid transparent; transition: all 180ms; }
.foot a:hover { color: var(--indigo); border-color: var(--indigo); }
.foot b { color: var(--ink); font-weight: 600; }

@media (max-width: 920px) {
  body { font-size: 16px; }
  .site-header { flex-wrap: wrap; }
  .site-nav { gap: 16px; }
  .article-list { grid-template-columns: 1fr; }
  /* colophon stacks cleanly on small screens */
  .foot { flex-direction: column; align-items: flex-start; gap: 12px; }
  .foot .creed { margin-bottom: 2px; }
}
@media (max-width: 600px) {
  .article-shell { padding-top: 22px; }
  .article h1 { font-size: clamp(1.7rem, 6.5vw, 2.4rem); margin-bottom: 18px; }
  .article-kicker { font-size: 10px; letter-spacing: 0.14em; margin-bottom: 8px; }
  .article-deck { font-size: 1.15rem; margin: -4px 0 14px; }
  .article-byline { margin-bottom: 22px; gap: 4px 8px; }
  .site-header { padding-left: 18px; padding-right: 18px; gap: 12px; }
  .mark { flex-wrap: wrap; }
  .mark .tld { white-space: nowrap; }
  .site-nav { gap: 18px; font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}
@page {
  margin: 20mm;
  @bottom-center {
    content: counter(page);
    font-family: var(--mono);
    font-size: 10px;
    color: var(--ink-soft);
  }
}
/* PDF/print path: Chromium emits variable Newsreader as Type 3 fonts that some
   print engines render incorrectly. Swap to the static, repository-pinned
   Unicode face so article PDFs embed reliable glyph subsets. */
@font-face {
  font-family: "Proof Unicode";
  src: url("/fonts/proof-unicode.ttf") format("truetype");
  font-style: normal;
  font-weight: 100 900;
  font-display: block;
}

@media print {
  :root {
    --serif: "Proof Unicode", Georgia, serif;
    --mono: "IBM Plex Mono", "Proof Unicode", monospace;
  }
  body::before, body::after { display: none; }
  .site-header, .foot { display: none; }
  .article a { color: inherit; text-decoration: none; }
  .article img { max-width: 100% !important; }
  .article figure { break-inside: avoid; }
  h2, h3 { break-after: avoid; }
  p { orphans: 3; widows: 3; }
}

/* ═══════════════════════════════════════════════════════════════════════════
   Content design system components
   ═══════════════════════════════════════════════════════════════════════════ */

/* Lead paragraph */
.lead {
  font-size: 20px; line-height: 1.55; color: var(--ink-soft);
  margin: 0 0 28px;
}

/* Callouts */
.callout {
  margin: 0 0 24px; padding: 16px 18px; border-radius: 6px;
  border-left: 3px solid var(--rule); background: var(--paper-deep);
  color: var(--ink-soft);
}
.callout strong {
  font-family: var(--mono); font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--ink); display: block; margin-bottom: 4px;
}
.callout.info { border-left-color: var(--indigo); background: var(--indigo-wash); }
.callout.warning { border-left-color: var(--ochre); background: var(--ochre-wash); }
.callout.proof { border-left-color: var(--verified); background: rgba(58, 143, 91, 0.08); }
.callout.todo { border-left-color: var(--indigo); background: var(--indigo-wash); }
.callout.claim { border-left-color: var(--indigo); background: var(--indigo-wash); }
.callout.refuted { border-left-color: var(--ochre); background: var(--ochre-wash); }

/* Status badges */
.status {
  display: inline-block; font-family: var(--mono); font-size: 10.5px;
  text-transform: uppercase; letter-spacing: 0.08em;
  padding: 4px 8px; border-radius: 4px; border: 1px solid var(--rule);
  color: var(--ink-soft); background: var(--paper-deep);
}
.status.published { color: var(--verified); border-color: rgba(58, 143, 91, 0.35); background: rgba(58, 143, 91, 0.08); }
.status.verified { color: var(--verified); border-color: rgba(58, 143, 91, 0.35); background: rgba(58, 143, 91, 0.08); }
.status.draft { color: var(--ink-faint); border-color: var(--rule); }
.status.refuted { color: var(--ochre); border-color: rgba(168, 119, 43, 0.35); background: var(--ochre-wash); }

/* Pull quote */
.pullquote {
  margin: 36px 0; padding: 22px 26px;
  border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  border-left: none; background: transparent;
}
.pullquote p {
  font-size: 22px; line-height: 1.35; font-style: italic; color: var(--ink);
  margin: 0 0 10px;
}
.pullquote cite {
  font-family: var(--mono); font-size: 12px; font-style: normal; color: var(--ink-faint);
}

/* Stat row / blocks */
.stat-row {
  display: flex; gap: 16px; flex-wrap: wrap; margin: 18px 0 28px;
}
.stat {
  min-width: 80px;
}
.stat .num {
  font-family: var(--mono); font-size: 26px; font-weight: 600; color: var(--indigo);
  line-height: 1; display: block;
}
.stat .caption {
  font-family: var(--mono); font-size: 9.5px; color: var(--ink-muted);
  text-transform: uppercase; letter-spacing: 0.06em; margin-top: 4px; display: block;
}

/* CTA box */
.cta {
  margin: 28px 0; padding: 18px 22px;
  background: var(--indigo-wash); border: 1px solid var(--indigo-line); border-radius: 6px;
}
.cta p { margin: 0 0 8px; color: var(--ink-soft); }
.cta p strong { color: var(--ink); }
.cta a {
  display: inline-block; font-family: var(--mono); font-size: 12px;
  color: var(--indigo-deep); text-decoration: none; font-weight: 600;
}
.cta a:hover { color: var(--indigo); }

/* Definition list */
.definition { margin: 0 0 24px; }
.definition dt {
  font-weight: 600; margin-top: 14px;
}
.definition dd {
  margin-left: 0; color: var(--ink-soft);
}

/* Tables */
.article table {
  width: 100%; border-collapse: collapse; margin: 0 0 24px;
  font-size: 14px;
}
.article th {
  font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em;
  text-align: left; padding: 10px 12px; border-bottom: 2px solid var(--indigo-line);
  color: var(--ink-soft); background: var(--paper-deep);
}
.article td {
  padding: 10px 12px; border-bottom: 1px solid var(--rule); color: var(--ink-soft);
}
.article tr:last-child td { border-bottom-color: var(--rule-strong); }

/* Two-column layout */
.two-col {
  display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin: 0 0 24px;
}
@media (max-width: 640px) {
  .two-col { grid-template-columns: 1fr; }
}

/* Format-specific tweaks */
body.format-white-paper .article h1 { font-size: clamp(36px, 5.5vw, 56px); }
body.format-proof-pack .article h1 { font-size: clamp(30px, 4.5vw, 44px); }
body.format-tutorial h2 { counter-increment: step; }
body.format-tutorial h2::before {
  content: counter(step) ". ";
  font-family: var(--mono); color: var(--indigo);
}

/* Print additions */
@media print {
  .callout, .cta, .pullquote { break-inside: avoid; }
  .proof-download { display: block; break-inside: avoid; }
  .article .proof-download__action { display: none; }
  .proof-download__print-url { display: block; margin-top: 8px; font-family: var(--mono); font-size: 10px; overflow-wrap: anywhere; }
  .stat-row { page-break-inside: avoid; }
}


.article-video-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: #3d4db3;
  text-decoration: none;
  border: 1px solid #d9d8ff;
  border-radius: 999px;
  padding: 0.45rem 0.9rem;
  background: #fff;
  transition: background 0.15s, border-color 0.15s;
}
.article-video-link:hover {
  background: #d9d8ff;
  border-color: #3d4db3;
}
.article-video-link::before {
  content: '▶';
  font-size: 0.65rem;
}

/* Inline branded video player */
.article-video-player {
  margin: 2em 0;
  border-top: 1px solid var(--rule);
  padding-top: 1.2em;
}
.video-player-label {
  font-family: var(--mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--indigo);
  margin: 0 0 12px;
  padding-left: 12px;
  border-left: 2px solid var(--indigo-line);
}
.video-player-frame {
  position: relative;
  background: var(--paper-deep);
  border: 1px solid var(--rule);
  border-radius: 4px;
  overflow: hidden;
  aspect-ratio: 16 / 9;
}
.video-player-frame video {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  background: #000;
}
.video-player-frame video::poster {
  object-fit: cover;
}
.video-player-meta {
  display: flex;
  gap: 14px;
  margin: 10px 0 0;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-faint);
}
.video-player-meta a {
  color: var(--indigo);
  text-decoration: underline;
  text-decoration-color: var(--indigo-line);
  text-underline-offset: 2px;
}
.video-player-meta a:hover {
  text-decoration-color: var(--indigo);
}
@media (max-width: 600px) {
  .video-player-frame {
    aspect-ratio: 16 / 9;
  }
}

/* ── ontology atlas (built from public/data/atlas_nodes.json) ── */
.atlas-index { max-width: 1120px; margin: 0 auto; padding: clamp(48px, 8vh, 96px) 22px 40px; }
.atlas-index h1 {
  font-size: clamp(1.7rem, 3.2vw, 2.5rem); font-weight: 400; line-height: 1.16;
  letter-spacing: -0.012em; margin: 0 0 22px; max-width: 32ch; text-wrap: balance;
}
.atlas-lede {
  font-family: var(--mono); font-size: 13px; line-height: 1.7; color: var(--ink-soft);
  max-width: 70ch; margin: 0 0 44px;
}
.atlas-lede code { background: var(--paper-deep); padding: 1px 5px; border-radius: 3px; font-size: 12px; }
.atlas-asof {
  font-family: var(--mono); font-size: 12px; color: var(--ink-faint);
  margin: 36px 0 0; padding-top: 20px; border-top: 1px solid var(--rule);
}
.atlas-section { margin: 0 0 56px; }
.atlas-kicker {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--indigo); margin: 0 0 8px;
}
.atlas-section h2 {
  font-size: clamp(1.25rem, 2.1vw, 1.55rem); font-weight: 500;
  letter-spacing: -0.008em; margin: 0 0 22px;
}
.atlas-list {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 0;
  border-top: 1px solid var(--rule);
}
.atlas-list li { border-bottom: 1px solid var(--rule); }
.atlas-card {
  display: grid; grid-template-rows: auto auto auto; gap: 6px;
  padding: 16px 14px 18px 14px; height: 100%;
  border-left: 2px solid transparent;
  transition: background 240ms var(--ease), border-color 240ms var(--ease);
  text-decoration: none; color: inherit;
}
/* an instrument, not a sitemap: the hairline rule takes the ink, the
   canonical URI warms to ochre — the citable thing is what lights up */
.atlas-card:hover { background: var(--indigo-wash); border-left-color: var(--indigo); }
.atlas-card:hover .atlas-uri { color: var(--ochre); }
.atlas-id {
  font-family: var(--mono); font-size: 12px; color: var(--ink-faint);
  letter-spacing: 0.04em;
}
.atlas-name {
  font-family: var(--serif); font-size: 1.02rem; line-height: 1.34;
  color: var(--ink); font-weight: 500;
}
.atlas-uri {
  font-family: var(--mono); font-size: 11px; color: var(--indigo);
  word-break: break-all; line-height: 1.4;
  transition: color 240ms var(--ease);
}
@media (max-width: 920px) {
  .atlas-list { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .atlas-list { grid-template-columns: 1fr; }
}

/* ── article ontology footer (built from public/data/article_ontology.json) ── */
.article-ontology {
  margin: 56px auto 0;
  padding: 22px 22px 24px;
  border: 1px solid var(--rule);
  background: var(--paper-deep);
}
.article-ontology-kicker {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--indigo); margin: 0 0 12px;
}
.article-ontology-list {
  list-style: none; margin: 0 0 14px; padding: 0;
  display: flex; flex-wrap: wrap; gap: 8px;
}
.article-ontology-link {
  display: inline-block;
  font-family: var(--mono); font-size: 13px; line-height: 1;
  padding: 8px 12px;
  border: 1px solid var(--indigo-line);
  background: var(--paper);
  color: var(--indigo);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: background 180ms var(--ease), color 180ms var(--ease);
}
.article-ontology-link:hover { background: var(--indigo); color: var(--paper); }
.article-ontology-link[data-kind="error_type"] { border-color: #b94e4e; color: #8a3535; }
.article-ontology-link[data-kind="error_type"]:hover { background: #b94e4e; color: var(--paper); }
.article-ontology-link[data-kind="emblem"] { border-color: #4e7bb9; color: #2d4f7e; }
.article-ontology-link[data-kind="emblem"]:hover { background: #4e7bb9; color: var(--paper); }
.article-ontology-link[data-kind="material_class"] { border-color: #4e9a6c; color: #2f6a4a; }
.article-ontology-link[data-kind="material_class"]:hover { background: #4e9a6c; color: var(--paper); }
.article-ontology-source {
  font-family: var(--mono); font-size: 12px; color: var(--ink-faint);
  margin: 0;
}
.article-ontology-source a { color: var(--ink-soft); }

/* ── atlas detail page (built from public/data/atlas_nodes.json) ── */
.atlas-detail { max-width: 880px; margin: 0 auto; padding: clamp(36px, 6vh, 72px) 22px 40px; }
.atlas-detail .b-label { font-family: var(--mono); font-size: 12px; color: var(--ink-faint); margin: 0 0 24px; }
.atlas-detail .b-label a { color: var(--ink-soft); text-decoration: none; }
.atlas-detail .b-label a:hover { color: var(--indigo); text-decoration: underline; }
.atlas-detail-kind {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--indigo); margin: 0 0 8px;
}
.atlas-detail[data-kind="error_type"] .atlas-detail-kind { color: #8a3535; }
.atlas-detail[data-kind="emblem"] .atlas-detail-kind { color: #2d4f7e; }
.atlas-detail[data-kind="material_class"] .atlas-detail-kind { color: #2f6a4a; }
.atlas-detail h1 {
  font-size: clamp(1.9rem, 4vw, 2.6rem); font-weight: 400; line-height: 1.12;
  letter-spacing: -0.014em; margin: 0 0 22px; text-wrap: balance;
}
.atlas-detail-uri {
  font-family: var(--mono); font-size: 13px; color: var(--indigo);
  background: var(--paper-deep); padding: 12px 14px;
  border-left: 3px solid var(--indigo); margin: 0 0 26px;
  overflow-wrap: anywhere;
}
.atlas-detail-blurb {
  font-family: var(--serif); font-size: 1.04rem; line-height: 1.6;
  color: var(--ink-soft); margin: 0 0 36px;
}
.atlas-detail-kicker {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-faint); margin: 0 0 12px;
}
.atlas-detail-refs {
  list-style: none; margin: 0 0 36px; padding: 0;
  display: flex; flex-wrap: wrap; gap: 8px;
}
.atlas-detail-ref-link {
  display: inline-block; font-family: var(--mono); font-size: 13px;
  padding: 8px 12px; border: 1px solid var(--rule);
  color: var(--ink-soft); text-decoration: none;
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}
.atlas-detail-ref-link:hover { border-color: var(--indigo); color: var(--indigo); }
.atlas-detail-no-refs {
  font-family: var(--serif); font-size: 0.98rem; line-height: 1.6;
  color: var(--ink-soft); margin: 0 0 36px; padding: 14px 16px;
  border-left: 3px solid var(--rule);
}
.atlas-detail-no-refs code {
  font-family: var(--mono); background: var(--paper-deep);
  padding: 1px 5px; border-radius: 3px; font-size: 12px;
}
.atlas-detail-asof {
  font-family: var(--mono); font-size: 12px; color: var(--ink-faint);
  margin: 0; padding-top: 18px; border-top: 1px solid var(--rule);
}
.atlas-detail-asof code { background: var(--paper-deep); padding: 1px 5px; border-radius: 3px; }

/* ── curated claim facets (built from scripts/build-claim-facets.mjs) ── */
.atlas-claims-index { max-width: 1120px; margin: 0 auto; padding: clamp(48px, 8vh, 96px) 22px 40px; }
.atlas-claims-facet { max-width: 940px; margin: 0 auto; padding: clamp(48px, 8vh, 96px) 22px 40px; }
.atlas-claims-index .b-label,
.atlas-claims-facet .b-label { font-family: var(--mono); font-size: 12px; color: var(--ink-faint); margin: 0 0 24px; }
.atlas-claims-index .b-label a,
.atlas-claims-facet .b-label a { color: var(--ink-soft); text-decoration: none; }
.atlas-claims-index .b-label a:hover,
.atlas-claims-facet .b-label a:hover { color: var(--indigo); text-decoration: underline; }
.atlas-claims-kicker {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--indigo); margin: 0 0 8px;
}
.atlas-claims-index h1,
.atlas-claims-facet h1 {
  font-size: clamp(1.7rem, 3.4vw, 2.6rem); font-weight: 400; line-height: 1.14;
  letter-spacing: -0.014em; margin: 0 0 22px; text-wrap: balance;
}
.atlas-claims-blurb {
  font-family: var(--serif); font-size: 1.06rem; line-height: 1.62;
  color: var(--ink-soft); margin: 0 0 36px; max-width: 70ch;
}
.atlas-claims-grid {
  list-style: none; margin: 0; padding: 0;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 0;
  border-top: 1px solid var(--rule);
}
.atlas-claims-grid li { border-bottom: 1px solid var(--rule); border-right: 1px solid var(--rule); }
.atlas-claims-grid li:nth-child(2n) { border-right: 0; }
.atlas-claims-card {
  display: grid; grid-template-rows: auto auto 1fr; gap: 8px;
  padding: 22px 22px 24px; height: 100%;
  text-decoration: none; color: inherit;
  transition: background 240ms var(--ease);
}
.atlas-claims-card:hover { background: var(--indigo-wash); }
.atlas-claims-card-title {
  font-family: var(--serif); font-size: 1.18rem; font-weight: 500; line-height: 1.22;
  color: var(--ink);
}
.atlas-claims-card-count {
  font-family: var(--mono); font-size: 11px; color: var(--ink-faint);
  letter-spacing: 0.04em;
}
.atlas-claims-card-blurb {
  font-family: var(--serif); font-size: 0.94rem; line-height: 1.55;
  color: var(--ink-soft);
}
.atlas-claims-count {
  font-family: var(--mono); font-size: 12px; color: var(--ink-faint);
  margin: 0 0 14px;
}
.atlas-claims-list {
  list-style: none; margin: 0 0 36px; padding: 0;
  border-top: 1px solid var(--rule);
}
.atlas-claim-row {
  display: grid;
  grid-template-columns: minmax(80px, auto) 1fr;
  grid-template-rows: auto auto;
  column-gap: 18px;
  padding: 14px 0 14px;
  border-bottom: 1px solid var(--rule);
}
.atlas-claim-id {
  grid-row: 1 / 3;
  font-family: var(--mono); font-size: 13px; font-weight: 600;
  letter-spacing: 0.04em; color: var(--indigo);
  align-self: start;
  padding-top: 1px;
}
.atlas-claim-name {
  font-family: var(--serif); font-size: 1.04rem; line-height: 1.42; color: var(--ink);
}
.atlas-claim-uri {
  grid-column: 2;
  font-family: var(--mono); font-size: 11px; color: var(--ink-faint);
  word-break: break-all; line-height: 1.45; margin-top: 2px;
}
.atlas-claim-uri code { background: transparent; }
.atlas-claim-meta {
  font-family: var(--serif); font-style: italic; color: var(--ink-faint);
}
.atlas-claims-asof {
  font-family: var(--mono); font-size: 12px; color: var(--ink-faint);
  margin: 0; padding-top: 18px; border-top: 1px solid var(--rule);
}
.atlas-claims-asof code { background: var(--paper-deep); padding: 1px 5px; border-radius: 3px; }
@media (max-width: 720px) {
  .atlas-claims-grid { grid-template-columns: 1fr; }
  .atlas-claims-grid li { border-right: 0; }
}